Fast-hardening cement composition containing multi-walled carbon nanotubes fast-hardening latex-modified concrete composition containing the same and repair method of concrete structure using the same

摘要

Portland cement 38 to 48 wt%, calcium sulfoaluminate 25 to 36 wt%, natural anhydride 14 to 20 wt%, calcium aluminate 3 to 6 wt%, calcium hydroxide 1 to 5 wt%, multi-wall carbon nano 0.1 to 0.4% by weight of a tube, 0.05 to 0.5% by weight of a polycarboxylic acid-based fluidizing agent, 0.1 to 0.5% by weight of calcium formate, 0.01 to 0.1% by weight of an antifoaming agent, 0.2 to 0.6% by weight of tartaric acid, and 0.2 to 1.0% by weight of lithium carbonate Provided are a fast-hardening cement composition comprising the same, a fast-hardening latex-modified concrete composition comprising multi-wall carbon nanotubes comprising the same, and a method for repairing a concrete structure using the same.